Rubber dusting apparatus



March 6, 1945. J GUTHRE 2,370,955

RUBBER DUSTING APPARATUS 3 Sheets-Sheet 1 Filed NOV. 15, 1943 2 I:31...- E INVENTOR,

March 6, 1945. A. J. GUTHRIE RUBBER DUSTING APPARATUS Filed NOV. 15,1943 3 Sheets-Sheet 2 INV NTOR,

Aria/warty Figure 4 illustrates a sectional view on the line 4'4 of Fig.3; Figure 5 illustrates a sectional view on the line 5-5 of Fig. 3,omitting the receptacle; i Figure 6 illustrates a longitudinal sectionalview of one of the receptacles;

Figure 7 illustrates a sectional view of the receptacle on the line 'l'!of Fig. 6;

Figure 8 illustrates a sectional view of the receptacle on the line 8-8of Fig. 6;

Figure 9 illustrates a sectional view of the ceptacle on the line 9- 9of Fig. 6 Figure 10 illustrates a longitudinal sectional view of thereceptacle with parts omitted; i Figure 11 is a sectional view of-thereceptacle on the line ll-Il of Fig. 10; I

Figure 12 illustrates a view of a receptacle'haw receptacle over aconveyor A which alines with the receptacle. v

Each receptacle is closed by a door 34 appropriately hinged in place andheld closedby a latch 35 that, can be actuated by an operator forreleasing the door, which door is automatically closed as the receptacleis moving from its initial elevated position, as will presently appear.

A spring 36 is connected to the external surface of the receptacle andtQtheexternaIsurface of the doorand' is-so shaped-that it will open thedoor as the position in which it shown in Fig- ,ure 6 and hold it inthat position until closed u "when the receptacle is moving. This lastclosing *operationisaccomplished through the use of an abutment3l on aresilient arm 38 which is staing a dust retaining means of modifiedform; and 1' Figure 13 illustrates a sectional view line Iii-l3 of Fig.12.

In-these drawings [5 denotes a suitable stand-' ard or base on which aring gear I6 is anchored by appropriate means, asby screws I1. The upperend. of the base is inclined and the ring gear on the applied thereto islikewiseinclined,

Abearing tube I8 is rotatably mounted above the ring gear by a king pinl9, and the bearing tube at each end has a shaft 'rotatably mount ed init. The shaft is shown as having a groove,

2| into which a threaded lug 22 projects, the said lug engaging threadsin a hole 23.

Each shaft 20 projects a suitable distance be: yond the periphery of thering gear and a pinion 24 keyed to each shaft-engages the teeth of thering gear and as the shafts moveover the ring gear, the pinionscommunicate rotary motion to the said shafts. Each shaft has areceptacle or housing 25 secured to itin appropriate manner,'and onesuch installation is illustrated in section, Figure ,3.v I j A lever 26is oscillatively mounted on the base: and at the edge of the ring gearwhich is lower-j most an abutment 27 projects into the path of travel ofthe shaft and arrests-the shaft. The I abutment is formed as a part of arod 28 which is guided in a bracket 25, and the lower end of the rod ispivotally, connectedto the lever 26, as at 30, under the tension of aspring '3ilawhich holds the parts normally in the positions in whichthey are shown in Figure 3. r i

A starting device is connected to the lever on the opposite side of'thepivot from that to which the arresting device .is connected and, in the,

present embodiment of the invention, it comprises a rod 3| guided in abracket 32 and the -upper-end of the rod has a-cam 33 which engages'theshaft 20 to impart initial movement,

'to the shaft, which shaft thereafter is moved under the'ini'luence ofgravity so that it travels to the lowermost position in which thereceptacle is'shown in'Figure 3,' and during the travel aio'resaid theshafts are rotated and the contents of the receptacle are tumbled about,contacting first one side and then the other of the lining which isinfront of the soapstone and the force ofthe tumbling action serves toimpel soapstone through the meshes of the'fabric so that the mass iscoated, and when the receptacle reaches the lowermost position in whichit is shown 'inFig 1 ure 3, an operator actuates'a latch, tobe'presently explained, and the door is moved to an i open. position,andthe mass of rubber escapes fromthe receptacle,.the said rubber beingidentified by the letter B and it is delivered to the I tioned'in" thepath of travel of the open door of the receptacleand as the receptaclemoves, the

door comes in contact with the abutment and forces the door closed sothat the latch engages shaped to form tubes-40,;into which posts or rods4! are introduced. ,{I'he posts are anchored o thevin r d W l. o t e boy p op iate manner and project-slightly beyond the end of the box. The:outer ends-of the posts are threaded to engage'nuts 42,- A retainingframe 43 has apertures so that the retaining frame can beapplied to; theposts and when the nuts are threaded in place, theybind the retainingframe against projecting ends 44 and 45 of the. linings 39a andg39b,respectivelyyof the box, In order to aid inthe; distribution of thesoapstone, the d o is i wise.r rov d i w t a. soapstone e ntainer ,6vattached in place insuitable manner,

t11 e;details of {which-are believed not material.

It is shown that springs A! are-lodged against the inner end; of theboxand bear, against a plate '48 which is engaged by the containers ofthe soapstone so ;that the springs yield under the impact of the-blocksand also, serve to hold the block =a ainst the container that isattached to the door. l

1 A modification-of means for retaining the soapstone in thebox maycomprise a rectangular holder for thegblock ,-in which said holder. isformed of forarninous materiaL'asshownat 49 so that soapstone willbedistributed tolgthe blockjas the receptacleis rotated the.receptaclebeing otherwise substantially that heretofore described.

H While soapstone and dust have been mentioned in connection with"theldistribution' on the; rubher, the inventor does not wish to be limitedwith respectto ,the-characterl of the dust with which e r b ris aera eIclaim:- 1. In .a bber dustingapparatuaa ringgear supported at, ,anangle to .a horizontal plane whereby, the said, ring-gear is inclined: ashaft journal turnably supported to move over and concentricwlth thering. gear, Lshafts rotatably mounted in the journals and extending.outward: ly'beyond the ringgear, pinions'on the shafts meshing. with theringgearand-adaptedtotravel on thegzinclined. surface .or the ringgearifor 1'0,

tating the shafts while carried over the ring gear, dust receptaclescarried by and rotating with the shafts, the said receptacles beingadapted to re.- ceive blocks of rubber to be tumbled in the saidreceptacles in contact with the dust.

2. In a rubber dusting apparatus, a suitable support, a ring gear heldon an incline on said support, a mounting for shafts turnable above thering gear, shafts rotatable in said mounting and projecting therefrombeyond the periphery of the ring gear, pinions keyed to said shaftsengaging the teeth of the ring gear whereby as the mounting for theshafts is turned over the ring gear the shafts are rotated, receptaclesattached to the ends of the said shafts whereby they rotate with theshafts, dust containers in the receptacles for receiving blocks ofrubber, closures for the ends of the containers, spring means forholding the closures .open, a stationary member with relation to whichthe receptacles move for engaging the closures to close them, andmanually operated means for holding the closures shut.

3. In a rubber dusting apparatus, a suitable support, a ring gear heldon an incline on said support, a mounting for shafts turnable above thering gear, shafts rotatable'in said mounting and projecting therefrombeyond the periphery of the ring gear, pinions keyed. to said shaftsengaging the teeth of the ring gear whereby as the mounting for theshafts is turned over the ring gear the shafts are rotated, receptaclesattached to the ends of the said shafts whereby they rotate with theshafts, cartridge-like boxes, having foraminous linings for holding dustap- 'plied to the interior of the receptacles and into which rubberblocks are introduced, the said blocks being tumbled in contact with thelinings as the shaft carries them from their elevated to their lowermostpositions.

4. In a rubber dusting apparatus, a suitable support, a ring gear heldon an incline on said support, a mounting for shafts turnable. above thering gear, shafts rotatable in said mounting and projecting therefrombeyond the periphery of the ring gear, pinions keyed to said shaftsengaging the teeth of the ring gear'whereby as the mounting for theshafts is turned over the ring gear 'the shafts are rotated, receptaclesattached to the ends of the said shafts whereby they rotate with theshafts, cartridge-like boxes having foraminous linings for holding dustapwhich rubber blocks are introduced, the said blocks being tumbled incontact with the lining as the shaft carries them from their elevated totheir lowermost positions, a closure for each of the receptacles, meansfor temporarily holding the closure shut, spring means for opening theclosure, and means in the path of travel of the receptacle engaging theclosures for shutting them as the receptacle moves.

5. In a rubber dusting apparatus, a receptacle, an auxiliary containertherein, a dust holding lining for the container, a spring-held plate atthe inner end of the container on which the inner end of the liningrests, a closure means for the receptacle, and a dust-contained liningon the inner surface of the closure against which successive blocks ofrubber are forced by the action of the spring-held plate.

-6. In a rubber dusting apparatus, a suitable receptacle angular incross section having means by which the receptacle is rotated and moved,a box in the receptacle angular in cross section, a

dust-contained lining on the inner surface of the box, a spring-heldplate at the inner end of the box on which the lining rests, a closurefor the receptacle, means for temporarily holding the closure shut, adust-contained lining on the inner suface of the closure against which,successive blocks of rubber are forced by the action of the spring-heldplate, a spring for openingthe closure, and means in the path of travelof the closure operative to shut the closure as the receptacle is moved.

l. In a rubber dusting apparatus, a receptacle angular in cross section,means for rotating the receptacle and moving it from a higher to a lowerplane, the said means being operated by gravitation of the contents ofthe receptacle, a box angular in cross section within the receptacle,posts anchored to the inner end of thebox and projecting from its outerend, a dust-contained lining on the inner surfaces of the inner surfacesof the box, the said lining having tubes to receive the posts, the outerends of the linings overlapping the outer edge of the box, a clampingring applied to the posts and engaging the ends of the lining, and nutsthreaded on the posts for holding the ring in place. I

ANDREW J. GUTHRIE.

plied to the interior of the receptacles and into

